33202210021 has 4 divisors (see below), whose sum is σ = 33230324844. Its totient is φ = 33174095200.

The previous prime is 33202209977. The next prime is 33202210033. The reversal of 33202210021 is 12001220233.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20768844996 + 12433365025 = 144114^2 + 111505^2 .

It is a cyclic number.

It is not a de Polignac number, because 33202210021 - 2¹³ = 33202201829 is a prime.

It is a super-2 number, since 2×33202210021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33202209977 and 33202210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33202210081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14055640 + ... + 14058001.

It is an arithmetic number, because the mean of its divisors is an integer number (8307581211).

Almost surely, 2^33202210021 is an apocalyptic number.

It is an amenable number.

33202210021 is a deficient number, since it is larger than the sum of its proper divisors (28114823).

33202210021 is a wasteful number, since it uses less digits than its factorization.

33202210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28114822.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 33202210021 its reverse (12001220233), we get a palindrome (45203430254).

The spelling of 33202210021 in words is "thirty-three billion, two hundred two million, two hundred ten thousand, twenty-one".